Stone-crusher



(No Model.) 2 SheetsS he et 1.

T. A. BLAKE.

STONE GRUSHBRI. No. 308,235. I Patented No 18, 1884.

(No Model.) 2 Sheets-Sheet 2.

' T. A. BLAKE.

STONE ORUSHEB.

No. 808,235. Patented Nov. 18, 1884.

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THEODORE A. BLAKE, OF NEWV HAVEN, CONNECTICUT.

STONE-CRUSHER.

SPECIFICATION forming part of Letters Patent No. 308,235, dated November 18,1884.

(N0 model.)

nection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a vertical central section of the several rings, the frustum-of-cone-shaped central crushing-head beingin elevation; in Fig. 2, an under side view of the several rings and central crushing-head, also showing the man ner of supporting the several rings and their springs; in Fig. 3, a diagram showing the circular swinging path of the central crushinghead; in Fig. 4, atop view of the'several rings and central crushing-head in the positions indicated in Fig. 1, and in Fig. 5 a like plan showing the rings and central crushing-head as having traveled through one-fourth of their entire movement.

This invention relates to animproveinent in that class of stone or ore crushers in which the material to be crushed is placed between the jaws, the faces of which converge to form hopper-like recesses between the jaws, and into which recesses the material to be crushed is placed, so that a movement of one jaw toward the other will crush the material, and as the jaw recedes the crushed material willpass out through the narrow spaces between the jaws at the bottom, and particularly to that class in which the stationary jaw is of ring or circular shape, the movable head arranged within the said ring being of frustum-of-cone shape, so that its periphery and the internal surface of the fixed ring form convergent crushing-jaws, power being imparted to the internal head to give to its axis a movement around a circle, but without rotation of the head,whereby there will be imparted to the said inner head aradial movement toward the surface of the ring to contract the space between on one side and correspondingly open the space upon the diametrically-opposite side, this radial movement to contract and open the space continuing around the ring as the head gyrates upon its center of motion, the object of my invention being to apply to this class of crushers the invention for which Letters Patent of the United States were granted to me April 25, 1882, No. 256,959, and which is now known as the Multiple Jaw Crusher, and whereby the production of the machine is very greatly increased; and the invention consists in a series of rings, one within another,theinner face of one and the periphery of the next forming a convergent space to receive the material to be crushed, combined with a central frustumof coneswings in a circular path, whereby an outward radial movement is imparted to it and to the series of rings to produce a crushing movement one toward the other, as more fully hereinafter described.

A represents the outer stationary ring, its inner face beinginclined upward and outward; B, the second ring, set within the first, its periphery being inclined upward and inward, so as to form a convergent space, a, between the two, the inner surface of the second ringbeing inclined upward and outward; C, athird ring of substantially the same shape as that of the second ring, so as to form a convergent space, 1), between it and the said second ring; and D, the central frustumof cone-shaped active crushing-head, the periphery of this central crushing-head, D, and the inner surface of the ring 0 forming a third convergent space, (I. The central crushing-head, D, is hung upon a ball-joint, 6, above and in axial line with the outer circle. From this head D ashaft, f, extends downward, and rests in a concentric seat, h, in the eecentrichub of abevel-gear, E. R0- tation is imparted to this gear by a corresponding bevel-pinion, F, on a driving-shaft, G, so that as the gear E revolves it will carry the lower end of the shaft f in a circular path around the axis of the wheel E, the ball-joint e above permitting such circular gyratory movement of the crushing-head D, as seen in Fig. 3.

As shown in Fig. 1, the rings and the cen' tral crushing-head,D, stand at their extreme positions at the left. The spaces a b c at that point, therefore, are at their most contracted condition, while at the opposite side they are shaped crushing-head arranged so that its axis ICO in the extreme open condition, each of the rings in that position standing eccentric to the others, as seen in Fig. 4. Starting from that position, the central crushing-head, D, swings around in its circular path, forcing each of the rings to travel in a similar path, contracting the spaces between each other and the outer ring as they advance, as seen in Fig. 5, which shows the movement of the central crushinghead one-fourth around-that is, the change of position of the central crushing-head and the rings B 0 from the position in which they started, Fig. 4.and, so continuing, the rings and central crushing-head will swing around arms, 1', extend radially inward from the under side of the outer ring, as seen in Fig. 2, and so far that the first ring, B, may rest thereon, as seen in Fig. 1; then from the ringBlike arms,l,extend inward,and upon which the ring 0 will rest, but so as to slide thereon in moving in the circular path before described.

To insure the proper relative positions of the several rings to each other and to the central crushing-head, a spring, mprefer ably a block of india-rubber-is introduced between the ends of the fixed arms on one ring and the ends of the fixed arms on the next ring,as seen in Figs. 1 and 2. These springs are compressed in a radial direction as the central crushing-head swings about its circle.

react to return the rings or hold them in their The several springs proper relative positions to each other-that next to it the springs between that jaw and the next and between the next and the outer will react alike and move both rings, tending to separate them and retain them in a like relative position to each other, so that the several spaces between the jaws will be equal.

The illustration showing two rings, B G, between the outer ring and the central crushinghead is sufficient to enable those skilled in the art to introduce more or less rings.

I claim- 1. The combination of the outer ring, one or more rings within said outer ring, a central crushing-head within the inner ring, the adjacent faces of said head and rings being shaped to form convergent spaces between them, and mechanism, substantially such as described, to impart to said head a gyratory movement in a circular path, substantially as described.

2. The combination of an outer ring, one or more rings within said outer ring, the adjacent faces of the several rings having convergent spaces, a central crushing-head arranged within the inner ring, and mechanism, substantially such as described, to impart a gymtory movement to said head in acircular path, and springs between the several rings, substantially as and for the purpose described.

THEODORE A. BLAKE. 'Witn esses:

JOHN E. EARLE, J OS. 0. EARLE. 

